github.com/gagliardetto/solana-go@v1.11.0/text/tag.go (about)

     1  // Copyright 2020 dfuse Platform Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package text
    16  
    17  import (
    18  	"reflect"
    19  	"strings"
    20  )
    21  
    22  type fieldTag struct {
    23  	Linear     bool
    24  	Skip       bool
    25  	Label      string
    26  	NoTypeName bool
    27  }
    28  
    29  func parseFieldTag(tag reflect.StructTag) *fieldTag {
    30  	t := &fieldTag{}
    31  	tagStr := tag.Get("text")
    32  	if tagStr == "" {
    33  		return t
    34  	}
    35  	for _, s := range strings.Split(tagStr, ",") {
    36  		if strings.HasPrefix(s, "linear") {
    37  			t.Linear = true
    38  		} else if strings.HasPrefix(s, "notype") {
    39  			t.NoTypeName = true
    40  		} else if s == "-" {
    41  			t.Skip = true
    42  		} else {
    43  			t.Label = s
    44  		}
    45  	}
    46  	return t
    47  }